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Chapter 6: UEFI BIOS
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IIO-PCIE Express Global Options
PCI-E Completion Timeout Disable
Use this feature to select the PCI-E Completion Time-out settings. The options are Yes,
No
, and Per-Port.
South Bridge
The following South Bridge information is displayed:
•
USB Module Version
•
USB Devices
Legacy USB Support
Select Enabled to support onboard legacy USB devices. Select Auto to disable legacy
support if there are no legacy USB devices present. Select Disable to have all USB devices
available for EFI applications only. The options are
Enabled,
Disabled, and Auto.
XHCI Hand-off
This is a work-around solution for operating systems that do not support XHCI (Extensible
Host Controller Interface) hand-off. The XHCI ownership change should be claimed by the
XHCI driver. The options are
Enabled
and Disabled.
Port 60/64 Emulation
Select Enabled for I/O port 60h/64h emulation support, which in turn, will provide complete
legacy USB keyboard support for the operating systems that do not support legacy USB
devices. The options are Disabled and
Enabled
.
PCIe PLL SSC
Select Enabled for PCH PCI-E Spread Spectrum Clocking support, which will allow the
BIOS to monitor and attempt to reduce the level of Electromagnetic Interference caused
by the components whenever needed. The options are
Disable
and Enable.
Server ME (Management Engine) Information
This feature displays the following general ME configuration settings.
•
Oper. (Operational) Firmware Version
•
Backup Firmware Version
•
Recovery Firmware Version
•
ME Firmware Status #1